Home / 12,031.46-18,056.46-7,870.34

Finding the Fourth Proportional to 12,031.46, 18,056.46 and 7,870.34

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Solution

The fourth proportional to 12,031.46, 18,056.46 and 7,870.34 is: 11,811.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,031.46 : 18,056.46 = 7,870.34 : x
  2. Step 2: Convert to fraction form
    12,031.46/18,056.46 = 7,870.34/x
  3. Step 3: Cross multiply
    12,031.46x = 18,056.46 × 7,870.34
  4. Step 4: Simplify right side
    12,031.46x = 142,110,479.40
  5. Step 5: Solve for x
    x = 142,110,479.40/12,031.46
  6. Step 6: Final answer
    x = 11,811.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.